Key events17m agoBerlin police uses water cannons to help crowds cool down as questions about preparedness rise36m agoTrain disruptions reported over weekend as Europe battles heatwave47m agoFrance looks into excess deaths caused by heatwave55m agoMorning opening: It's just too hotBerlin police uses water cannons to help crowds cool down as questions about preparedness riseRecord-high temperatures were also recorded in Germany over the weekend, with reports of wildfires and Berlin police resorting to using water cannons to cool down the crowds.Police use water cannon to spray people with water as the arrive at the Olympic stadium for a concert of US singer Bruno Mars in Berlin, Germany. Photograph: Ralf Hirschberger/AFP/Getty ImagesIn Gohrischheide, in eastern Germany, a fire broke out in a large forest that’s still contaminated with ammunition from the second world war, complicating efforts by firefighters, AP reported.Similarly, a major firefighting operation was underway in southwest Germany near the village of Traisen, where the heat sparked a forest fire in an area that also contained unexploded ordnance. Some 650 people in Traisen had to leave their homes Sunday afternoon because the fire continued to spread.People use emergency blankets to protect them from the heat as the arrive at the Olympic stadium for a concert of US singer Bruno Mars in Berlin, Germany. Photograph: Ralf Hirschberger/AFP/Getty ImagesJust like in France, the crisis also prompted some tricky questions about Germany’s preparedness as climate change means we should expect more of this sort of heatwaves in the future.Train disruptions reported over weekend as Europe battles heatwaveOver the weekend, multiple European train operators reported substantial disruptions as the extreme weather posed all sorts of logistical challenges.Passengers stand on the platform waiting for trains delayed due to the heatwave at Warsaw Central railway station in Warsaw, Poland. Photograph: Sergei Gapon/AFP/Getty ImagesIssues were reported with Czech, German and Polish trains, among others, with stories of stranded passengers, delays running into hours, and overcrowded trains with barely (or not) working AC.The Czech operator České dráhy even published a helpful social media thread explaining some of the challenges it faced, including their response to the ever-present question of “why is the AC in my train not working properly” (tl;dr: it’s not prepared for temperatures of 40C).It features this killer line: